Obama's Magic Bus

With apologies to Pete, Roger and the rest:

For several days I board the thing 
(Big crock, the Magic Bus).
To sell my spiel with extra zing 
(Big crock, the Magic Bus).
Its carbon footprint is immense
(Big crock, the Magic Bus).
Don't think you'll notice
'Cuz you're dense 
(Big crock, the Magic Bus).
Thank me tons for bein' your prez
(Big crock, the Magic Bus).
Don't listen to what the Tea Party says 
(Big crock, the Magic Bus).
Being me is such a plus (big crock, the Magic Bus).
So hop on board my Magic Bus
(Big crock, the Magic Bus).
Yesssssss!...